<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        div{
            border: 1px solid yellow;
            font-size: 30px;
            color: blue;
        }
        span{
            border: 5px dashed blue;
            color: yellow;
            font-size: 20px;
        }
    </style>
</head>
<body>
    <div>标签1</div>
    <span>标签2</span>
</body>
</html>